A very useful visual to add next to this is "The Most Common Job In Every State"[0] map from NPR's Planet Money. As soon as I was aware of the research in autonomous driving I was pretty confident trucking would be the first industry hit. Until I saw that map I had no sense of how major of a disruption this could be. [0] http://www.npr.org/sections/money/2015/02/05/382664837/map-t...
It's not even just the trucking, it's truck stops, highway diners, tiny motels all over the place, there is a massive amount of infrastructure that was built because of and for truck drivers and their needs, and that's still not it because there are tons of small town economies built on the last job that pays well without a college education that more or less anyone can do.